18662780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9239}}^1$

素因数の和:9349

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 20921380

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9239, 18478, 36956, 46195, 92390, 184780, 933139, 1866278, 3732556, 4665695, 9331390, 18662780]

約数ペア:

[(1, 18662780), (2, 9331390), (4, 4665695), (5, 3732556), (10, 1866278), (20, 933139), (101, 184780), (202, 92390), (404, 46195), (505, 36956), (1010, 18478), (2020, 9239)]